Schema::create('products', function (Blueprint $table) {
        $table->increments('id');
        $table->string('name');
        $table->string('slug');
        $table->text('description');
        $table->string('tags');
        $table->string('original_price');
        $table->integer('view_order')->default(0);
        $table->unsignedInteger('admin_id');
        $table->foreign('admin_id')->references('id')->on('admins');
        $table->boolean('status');
        $table->timestamps();
    });

Schema::create('categories', function (Blueprint $table) {
        $table->increments('id');
        $table->string('name');
        $table->boolean('status');
        $table->timestamps();
    });

Schema::create('product_categories', function (Blueprint $table) {
        $table->increments('id');
        $table->unsignedInteger('product_id');
        $table->foreign('product_id')->references('id')->on('products');
        $table->unsignedInteger('category_id');
        $table->foreign('category_id')->references('id')->on('categories');
        $table->timestamps();
    });

/**
 * @return IlluminateDatabaseEloquentRelationsBelongsToMany
 */
public function products()
{
    return $this->belongsToMany(Product::class);
}

/**
 * @return IlluminateDatabaseEloquentRelationsBelongsToMany
 */
public function categories()
{
    return $this->belongsToMany(Category::class);
}